I have 2015 Winnie Minnie 22 footer (Ford E350) . The battery is dead after sitting on the drive way for 6 months. I connected the charger to the chassis battery but it doesn't charge . I heard modern chargers don't charge completely dead battery and I do not have a spare battery. What is the best way to charge this dead battery ? thanks

Just jump, attach charger, start charging, remove the jump and let it rip.

For the OP: if you are plugged in or have solar you can add a Trik-L-Start combiner to keep the chassis battery charged. Letting any battery run that low will cause sulfation and permanent loss of capacity.

Just jump, attach charger, start charging, remove the jump and let it rip.

For the OP: if you are plugged in or have solar you can add a Trik-L-Start combiner to keep the chassis battery charged. Letting any battery run that low will cause sulfation and permanent loss of capacity.